Weather Forecasting Contest for Little Rock-Adams, AR (KLIT)

Tomorrow

Forecast at a Glance from the National Weather Service

This
Afternoon

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%
Slight Chc
Tstms
Hi 89 °F
Tonight

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%
Slight Chc
Tstms
Lo 64 °F
Monday

Chance Thunderstorms Chance for Measurable Precipitation 30%
Chance
Tstms
Hi 83 °F
Monday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%
Slight Chc
Tstms
Lo 57 °F
Tuesday

Mostly Sunny
Mostly
Sunny
Hi 82 °F
Tuesday
Night

Mostly Clear
Mostly
Clear
Lo 61 °F
Wednesday

Mostly Sunny
Mostly
Sunny
Hi 87 °F
Wednesday
Night

Mostly Clear
Mostly
Clear
Lo 68 °F
Thursday

Sunny
Sunny

Hi 92 °F

Go to National Weather Service page
Detailed site information

Weather Forecasts for Monday 21 May 2012

Forecaster Tmin(F) Tmax(F) Precip(in) Comment
NWS-MOS-NAM-12-DAY1 63 84 0.07
NWS-MOS-GFS-00-DAY1 63 83 0
NWS-MOS-GFS-06-DAY1 61 83 0.03
NWS-MOS-GFS-12-DAY1 61 83 0
NWS-MOS-GFS-18-DAY2 64 85 0
NWS-MOS-GFS-06-DAY2 64 86 0.03
NWS-MOS-NAM-00-DAY1 66 85 0.05
NWS-MOS-GFS-12-DAY2 64 88 0
NWS-MOS-NAM-12-DAY2 66 86 0
CLIMATOLOGY 61 82 0.16 From 1971-2000 U.S. Climate Normals

A Sample Forecasting Procedure


Weather forecasters look at many types of data to help them build a forecast, and each forecaster will have their own approach. Here is a simple procedure to get you started.
  1. First look at current weather conditions:

    Surface Analysis

    Visible
    Satellite

    Infrared
    Satellite

    Radar

    A good stating point for formulating your forecast will be determining what is happening around the country today. Where are the major weather systems? Where has it been hot? Where has it been raining? Is any of this weather moving towards my forecasting site over the next forecasting period?
  2. Look at the National Weather Service hourly weather forecast graph and the forecast of fronts and precipitation:

    Graph

    Fronts/Precip
    Remember that the forecast day goes from about midnight to midnight local time. We forecast for a daily High and Low. The Low is typically recorded in the early morning hours of the day, while the high is generally reached in the afternoon. But check the hourly graph for the possibility that the Low and High might come at different times. For example, if a strong cold front comes through early in the day, the High might be in the early morning hours and the temperature might fall for the rest of the day, and the Low would be at the very end of the day.
  3. Look at National Weather Service precipitation forecasts:

    Precip
    The times for these plots are in UTC (or GMT); a contest day goes from 0600 UTC (about midnight in most of the U.S.) to 0600 UTC the next day. Click on the plots corresponding to those hours. Your precip forecast is for the whole day, so you would add the amounts from each 6- or 12-hr plot to calculate what the NWS is predicting for the entire contest day. Remember that you need to predict the amount in inches, and most locations receive amounts over one inch only a few times each year. On most days the precip forecast should be zero, and for many others it will be a few hundredths of an inch (e.g. 0.15 inches).
  4. Check and submit your forecast:
    Once you have determined your high, low, and precipitation amount, check it with the computer model forecasts shown in the table above. Are you close? Generally it’s a good idea to be fairly close to these computer forecasts, because they're typically quite good. Once you've entered your forecast in the form above, click the Submit button.

Legend

This Month's Division Leaders
 M month division wins in last year
 W week division wins in last month
 D day division wins in last week
Elementary School Divisions
Middle School Divisions
High School Divisions
College Divisions
Teacher Division
Open Division
Computer Division
Consensus Division
Reference Division

Today


Click for Little Rock-Adams, AR (KLIT) Forecast

Weather Forecasts for Sunday 20 May 2012

ForecasterTminTmaxPrecipComment
OBSERVED65880Observed data through: 14:53 CDT.
Consensus
CONSENSUS-166.288.50.00
MEDIAN66880
Computer
NWS-MOS-NAM-12-DAY168890
NWS-MOS-GFS-00-DAY068890
NWS-MOS-GFS-00-DAY164880
NWS-MOS-GFS-18-DAY166890
NWS-MOS-GFS-06-DAY166880
NWS-MOS-NAM-00-DAY070880.03
NWS-MOS-GFS-12-DAY166890
NWS-MOS-GFS-18-DAY263880
NWS-MOS-GFS-06-DAY265890
NWS-MOS-NAM-00-DAY168880
NWS-MOS-GFS-12-DAY265880
NWS-MOS-NAM-12-DAY269880
Reference
CLIMATOLOGY60820.16From 1971-2000 U.S. Climate Normals
PERSISTENCE65900

Legend

This Month's Division Leaders
 M month division wins in last year
 W week division wins in last month
 D day division wins in last week
Elementary School Divisions
Middle School Divisions
High School Divisions
College Divisions
Teacher Division
Open Division
Computer Division
Consensus Division
Reference Division

Yesterday

Weather Forecasts for Saturday 19 May 2012

ForecasterTmin
(score)
Tmax
(score)
Precip
(score)
CommentDay
Score
Division
Points
OBSERVED65900Data FINAL. Scores COMPLETE.
Consensus
MEDIAN65 (0)89 (1)0 (0)1
CONSENSUS-165.5 (0.5)89.3 (0.7)0 (0)1.2
Computer
NWS-MOS-GFS-18-DAY165 (0)89 (1)0 (0)1
NWS-MOS-GFS-06-DAY165 (0)89 (1)0 (0)1
NWS-MOS-GFS-12-DAY165 (0)89 (1)0 (0)1
NWS-MOS-NAM-12-DAY167 (2)90 (0)0 (0)2
NWS-MOS-GFS-00-DAY067 (2)90 (0)0 (0)2
NWS-MOS-GFS-00-DAY164 (1)89 (1)0 (0)2
NWS-MOS-GFS-18-DAY264 (1)89 (1)0 (0)2
NWS-MOS-GFS-06-DAY264 (1)88 (2)0 (0)3
NWS-MOS-NAM-00-DAY168 (3)90 (0)0 (0)3
NWS-MOS-GFS-12-DAY264 (1)88 (2)0 (0)3
NWS-MOS-NAM-12-DAY268 (3)89 (1)0 (0)4
NWS-MOS-NAM-00-DAY069 (4)91 (1)0 (0)5
Reference
PERSISTENCE63 (2)90 (0)0 (0)2
CLIMATOLOGY60 (5)82 (8)0.16 (7.7)From 1971-2000 U.S. Climate Normals20.7

Daily Weather Map page

Results for Previous Days

Friday 18 May 2012
Thursday 17 May 2012
Wednesday 16 May 2012
Tuesday 15 May 2012

Legend

This Month's Division Leaders
 M month division wins in last year
 W week division wins in last month
 D day division wins in last week
Elementary School Divisions
Middle School Divisions
High School Divisions
College Divisions
Teacher Division
Open Division
Computer Division
Consensus Division
Reference Division

Standings

Leading Weather Forecasters for Week of Sun 13 May 2012 - Sat 19 May 2012

RankForecaster# ForecastsTmin
Score
Tmax
Score
Precip
Score
Week
Score
Division
Points

Leading Weather Forecasters for May 2012

RankForecaster# ForecastsTmin
Score
Tmax
Score
Precip
Score
Month
Score
Division
Points

Legend

This Month's Division Leaders
 M month division wins in last year
 W week division wins in last month
 D day division wins in last week
Elementary School Divisions
Middle School Divisions
High School Divisions
College Divisions
Teacher Division
Open Division
Computer Division
Consensus Division
Reference Division

Top Forecasters

Highest-Rated Forecasters, All Divisions

Higher numbers are better, minimum of 5 forecasts
RankForecaster# ForecastsForecaster Rating
1PERSISTENCE2535.7
2CLIMATOLOGY25-187.9

Legend

This Month's Division Leaders
 M month division wins in last year
 W week division wins in last month
 D day division wins in last week
Elementary School Divisions
Middle School Divisions
High School Divisions
College Divisions
Teacher Division
Open Division
Computer Division
Consensus Division
Reference Division

Weather For Little Rock-Adams , AR (KLIT)

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